+static struct snd_soc_dai_ops acp_pdm_dai_ops = {
+ .hw_params = NULL,
+ .trigger = NULL,
+};
doesn't seem very useful? can you remove this pdm_dai_ops?
+
+static struct snd_soc_dai_driver acp_pdm_dai_driver = {
+ .capture = {
+ .rates = SNDRV_PCM_RATE_48000,
+ .formats = SNDRV_PCM_FMTBIT_S24_LE |
+ SNDRV_PCM_FMTBIT_S32_LE,
+ .channels_min = 2,
+ .channels_max = 2,
+ .rate_min = 48000,
+ .rate_max = 48000,
+ },
+ .ops = &acp_pdm_dai_ops,
+};
+
+static const struct snd_soc_component_driver acp_pdm_component = {
+ .name = DRV_NAME,
+};
+
+static int acp_pdm_audio_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ struct pdm_dev_data *adata;
+ unsigned int irqflags;
+ int status;
+
+ if (!pdev->dev.platform_data) {
+ dev_err(&pdev->dev, "platform_data not retrieved\n");
+ return -ENODEV;
+ }
is this test needed?
+ irqflags = *((unsigned int *)(pdev->dev.platform_data));
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
+ return -ENODEV;
+ }
+
+ adata = devm_kzalloc(&pdev->dev, sizeof(*adata), GFP_KERNEL);
+ if (!adata)
+ return -ENOMEM;
+
+ adata->acp_base = devm_ioremap(&pdev->dev, res->start,
+ resource_size(res));
+ if (!adata->acp_base)
+ return -ENOMEM;
+
+ adata->capture_stream = NULL;
+
+ dev_set_drvdata(&pdev->dev, adata);
+ status = devm_snd_soc_register_component(&pdev->dev,
+ &acp_pdm_component,
+ &acp_pdm_dai_driver, 1);
+ if (status) {
+ dev_err(&pdev->dev, "Fail to register acp pdm dai\n");
+
+ return -ENODEV;
return status;
+ }
+ return 0;
+}
+
+static int acp_pdm_audio_remove(struct platform_device *pdev)
+{
+ return 0;
+}
not needed?
+
+static struct platform_driver acp_pdm_dma_driver = {
+ .probe = acp_pdm_audio_probe,
+ .remove = acp_pdm_audio_remove,
+ .driver = {
+ .name = "acp_rn_pdm_dma",
+ },
+};
+
+module_platform_driver(acp_pdm_dma_driver);
